System layer includes single user management, single resource management and single job management system, and it can offer the service for application layer.

系统层包括统一用户管理、统一资源管理和统一作业管理三部分，为应用层提供服务保障。

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System layer includes single user management, single resource management and single job management system, and it can offer the service for application layer.

系统层包括统一用户管理、统一资源管理和统一作业管理三部分，为应用层提供服务保障。

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